# All files / components/Checkbox Checkbox.js

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     import React from 'react';
    import PropTypes from 'prop-types';
    import generateId from '../../extensions/generateId';
    import CheckboxInput from './styles/CheckboxInput';
    import CheckboxLabel from './styles/CheckboxLabel';
    import CheckboxContainer from './styles/CheckboxContainer';
    import { defaultProps } from 'recompose';

    export default class Checkbox extends React.PureComponent {
      static propTypes = {
        /**
         * Adds a class name to the input element.
         */
        className: PropTypes.string,
        /**
         * Adds an id to the input element.
         */
        id: PropTypes.string,
        /**
         * The value of the checkbox.
         */
        value: PropTypes.oneOfType([PropTypes.string, PropTypes.bool]),
        /**
         * Whether the checkbox is checked or not.
         */
        checked: PropTypes.bool,
        /**
         * Whether the checkbox is required for form submission.
         */
        required: PropTypes.bool,
        /**
         * Whether the user is prevented from interacting with the checkbox.
         */
        disabled: PropTypes.bool,
        /**
         * A description to display next to the checkbox.
         */
        description: PropTypes.node,
        /**
         * Callback for the onChange event of the input.
         */
        onChange: PropTypes.func,
        /**
         * A component to render an input, by default hidden.
         */
        Input: PropTypes.func,
        /**
         * A component to render a label. By default this component renders the checkbox itself as a pseudoelement pair.
         */
        Label: PropTypes.func,
        /**
         * A component to render the wrapping element of the assembled checkbox/label
         */
        Container: PropTypes.func,
      };

      static defaultProps = {
        className: null,
        id: null,
        value: undefined,
        checked: undefined,
        required: false,
        disabled: false,
        description: null,
        onChange: () => null,
        Input: CheckboxInput,
        Label: CheckboxLabel,
        Container: CheckboxContainer,
      };

      static Small = defaultProps({
        Label: CheckboxLabel.Small,
      })(Checkbox);

      computeChecked = () => {
        const { value, checked } = this.props;

        if (typeof checked === 'boolean') {
          return checked;
        }

        if (typeof value === 'boolean') {
          return value;
        }

        return undefined;
      };

      computeValue = () => {
        const { value, checked } = this.props;
        // assume user is using value correctly if checked is defined
        // or if value isn't boolean
        if (checked !== undefined || typeof value !== 'boolean') {
          return value;
        }

        return undefined;
      };

      render() {
        const {
          className,
          disabled,
          value,
          name,
          required,
          description,
          onChange,
          Container,
          Input,
          Label,
          checked,
        } = this.props;

        const id = this.props.id || generateId('checkbox');
        const isChecked = this.computeChecked();

        return (
          <Container>
            <Input
              name={name}
              id={id}
              className={className}
              type="checkbox"
              disabled={disabled}
              checked={isChecked}
              value={this.computeValue()}
              required={required}
              onChange={onChange}
            />
            <Label htmlFor={id} active={isChecked}>
              {description}
            </Label>
          </Container>
        );
      }
    }